Rami Kouncar came very highly recommended to me by a colleague at work for my 2017 Mercedes-Benz E300. Three months after I bought my used E300 (low mileage, about 65k), I was alerted with a check engine light for a crankcase ventilation valve (PCV) failure due to the valve either failing or becoming clogged. I took a chance and drove to MD (I live in VA) banking on the high recommendation from my colleague to be seen at Rami's. I walked into his shop one afternoon, within 2 mins, he uttered the letters PCV, advised me that it's a common safety recall item for my model, advised me to take it to the dealership and that they would fix it for free. In the event they didn’t, he said he would.
I admired his straightforwardness, advocacy for the common customer (someone he had never met!) and professionalism that I vowed to take my car back to him in the future. Sure enough, the dealership repaired my vehicle for free (might have cost me $1500-$2000 out of pocket), provided a loaner car in the period I didn't have one, and I haven't had issues and have only had peace of mind ever since. 10 months after owning the car, I was due for Service B for my Mercedes, took it in, completed within 1.5 hrs, and the price was more than fair.
I HIGHLY recommend a professional mechanic like Rami and his team. The integrity, professionalism and strong sense of customer service is second to none. You will have total peace of mind with your vehicle at Rami Kouncar's shop.